.timeline {
  list-style: none;
  padding: 20px 0 20px;
  position: relative;
}
.timeline:before {
  top: 0;
  bottom: 0;
  position: absolute;
  content: " ";
  width: 3px;
  background-color: #eeeeee;
  left: 50%;
  margin-left: -1.5px;
}
.timeline > li {
  margin-bottom: 20px;
  position: relative;
}
.timeline > li:before,
.timeline > li:after {
  content: " ";
  display: table;
}
.timeline > li:after {
  clear: both;
}
.timeline > li:before,
.timeline > li:after {
  content: " ";
  display: table;
}
.timeline > li:after {
  clear: both;
}
.timeline > li > .timeline-panel {
  width: 45%;
  float: left;
  padding: 20px;
  position: relative;
  background-color: white;
}

.timeline > li > .timeline-panel-shadow{
  -webkit-box-shadow: 0 1px 6px rgba(0, 0, 0, 0.175);
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.175);
}

.timeline > li > .timeline-panel:before {
  position: absolute;
  top: 26px;
  right: -15px;
  display: inline-block;
  border-top: 15px solid transparent;
  border-left: 15px solid #FFFFFF;
  border-right: 0 solid #FFFFFF;
  border-bottom: 15px solid transparent;
  content: " ";
}

.shadow-triangle {
  border-left: 15px solid #ccc;
  border-right: 0 solid #ccc;
}

.timeline > li > .timeline-panel:after {
  position: absolute;
  top: 27px;
  right: -14px;
  display: inline-block;
  border-top: 14px solid transparent;
  border-left: 14px solid #fff;
  border-right: 0 solid #fff;
  border-bottom: 14px solid transparent;
  content: " ";
}
.timeline > li > .timeline-badge {
  color: #fff;
  width: 34px;
  height: 34px;
  line-height: 34px;
  position: absolute;
  top: 25px;
  left: 50%;
  margin-left: -17px;
  background-color: #999999;
  z-index: 100;
  border-top-right-radius: 50%;
  border-top-left-radius: 50%;
  border-bottom-right-radius: 50%;
  border-bottom-left-radius: 50%;

}
.timeline > li.timeline-inverted > .timeline-panel {
  float: right;
}
.timeline > li.timeline-inverted > .timeline-panel:before {
  border-left-width: 0;
  border-right-width: 15px;
  left: -15px;
  right: auto;
}
.timeline > li.timeline-inverted > .timeline-panel:after {
  border-left-width: 0;
  border-right-width: 14px;
  left: -14px;
  right: auto;
}
.timeline-badge.primary {
  background-color: #2e6da4 !important;
}
.timeline-badge.success {
  background-color: #3f903f !important;
}
.timeline-badge.warning {
  background-color: #f0ad4e !important;
}
.timeline-badge.danger {
  background-color: #d9534f !important;
}
.timeline-badge.info {
  background-color: #5bc0de !important;
}
.timeline-title {
  margin-top: 0;
  margin-bottom: 2px;
  color: inherit;
}
.timeline-body > p,
.timeline-body > ul {
  margin-bottom: 2px;
  font-weight: 200; 
  margin-top: 4px;
}
.timeline-body > p + p {
  margin-top: 5px;
}

.stone-age-badge {
  background-image: url("../img/stone-age-small-icon.svg")
  }

.bronze-age-badge {
  background-image: url("../img/bronze-age-small-icon.svg")
  } 

.iron-age-badge {
  background-image: url("../img/iron-age-small-icon.svg")
  }

.silicon-age-badge {
  background-image: url("../img/silicon-age-small-icon.svg")
  }   

